EP1736306B1 - Bande de tissu composite avec régions élastiques et non-élastiques - Google Patents

Bande de tissu composite avec régions élastiques et non-élastiques Download PDF

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Publication number
EP1736306B1
EP1736306B1 EP20050013588 EP05013588A EP1736306B1 EP 1736306 B1 EP1736306 B1 EP 1736306B1 EP 20050013588 EP20050013588 EP 20050013588 EP 05013588 A EP05013588 A EP 05013588A EP 1736306 B1 EP1736306 B1 EP 1736306B1
Authority
EP
European Patent Office
Prior art keywords
strips
woven fabric
laminated
composite web
film
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP20050013588
Other languages
German (de)
English (en)
Other versions
EP1736306A1 (fr
Inventor
Georg Baldauf
Josef Leuders
Herbert Dr. Bader
Marcus Schönbeck
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mondi Gronau GmbH
Original Assignee
Nordenia Deutschland Gronau GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to DE200550009317 priority Critical patent/DE502005009317D1/de
Application filed by Nordenia Deutschland Gronau GmbH filed Critical Nordenia Deutschland Gronau GmbH
Priority to EP20050013588 priority patent/EP1736306B1/fr
Priority to AT05013588T priority patent/ATE462557T1/de
Priority to ES05013588T priority patent/ES2340932T3/es
Priority to PL05013588T priority patent/PL1736306T3/pl
Priority to US11/250,793 priority patent/US7422991B2/en
Priority to JP2005310064A priority patent/JP4391466B2/ja
Publication of EP1736306A1 publication Critical patent/EP1736306A1/fr
Priority to US12/012,195 priority patent/US7704901B2/en
Application granted granted Critical
Publication of EP1736306B1 publication Critical patent/EP1736306B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/49007—Form-fitting, self-adjusting disposable diapers
    • A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
    • A61F13/4902—Form-fitting, self-adjusting disposable diapers with elastic means characterised by the elastic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/04—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by at least one layer folded at the edge, e.g. over another layer ; characterised by at least one layer enveloping or enclosing a material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
    • B32B3/18—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by an internal layer formed of separate pieces of material which are juxtaposed side-by-side
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/263—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer having non-uniform thickness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/44—Number of layers variable across the laminate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0207—Elastomeric fibres
    • B32B2262/0215—Thermoplastic elastomer fibers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2274/00—Thermoplastic elastomer material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/51—Elastic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/554—Wear resistance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2459/00—Nets, e.g. camouflage nets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B37/1284—Application of adhesive
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1089—Methods of surface bonding and/or assembly therefor of discrete laminae to single face of additional lamina
    • Y10T156/1092—All laminae planar and face to face
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/21—Circular sheet or circular blank
    • Y10T428/219—Edge structure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24058—Structurally defined web or sheet [e.g., overall dimension, etc.] including grain, strips, or filamentary elements in respective layers or components in angular relation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24132—Structurally defined web or sheet [e.g., overall dimension, etc.] including grain, strips, or filamentary elements in different layers or components parallel
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/601—Nonwoven fabric has an elastic quality
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/637—Including strand or fiber material which is a monofilament composed of two or more polymeric materials in physically distinct relationship [e.g., sheath-core, side-by-side, islands-in-sea, fibrils-in-matrix, etc.] or composed of physical blend of chemically different polymeric materials or a physical blend of a polymeric material and a filler material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/659—Including an additional nonwoven fabric
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/674—Nonwoven fabric with a preformed polymeric film or sheet

Definitions

  • the invention relates to a composite web having elastic and inelastic regions, which on both surfaces nonwoven fabric and between them film strips of an elastic film, wherein a surface in the form of a flat nonwoven fabric layer is present and wherein the nonwoven fabric layer between the film strip is bonded to nonwoven fabric, which at the opposite Surface of the composite web is arranged, as well as a method for producing the composite web.
  • Sections of such a composite web are suitable, for example, for the manufacture of hygiene products, where they can be used as elastic end regions or elastic closure strips.
  • thermoplastic elastomer is introduced in the molten state in the form of strips between two nonwoven webs, wherein the nonwoven webs are adhesively bonded to each other between the strips of the thermoplastic elastomer.
  • the composite web is elastic in the transverse direction in the region of the film strips and inelastic between the film strips where the nonwoven webs are glued flat.
  • the extrusion of the thermoplastic elastomer must be matched in a process to the laminating process, wherein the width of the elastic film strips is predetermined by the use of special extrusion dies.
  • the material of the nonwoven webs is to be chosen such that on the one hand a high tensile strength and on the other hand a high elasticity can be achieved.
  • the invention has for its object a composite web, and to provide a method for its production, which has an improved tensile strength has a high elasticity and is inexpensive and flexible to manufacture.
  • each film strip is connected to a respective nonwoven fabric layer to a laminate strip, that the laminate strips are glued on its side of the sheet with the sheet-like nonwoven fabric layer and that the nonwoven fabric between the laminate strips bonded to the nonwoven sheet, is in the form of nonwoven strips which are parallel to the laminate strips and overlap the nonwoven layer of the laminate strips in edge regions of the laminate strips.
  • the composite web of the present invention is elastic in the regions of the laminate strips transverse to its longitudinal direction and inelastic between the laminate strips, whereby the elastic properties and tear strength of the composite web can be selectively changed both by the structure of the laminate strips and by the structure of the nonwoven strips.
  • the nonwoven strips between the laminate strips are glued over their entire surface with the flat nonwoven fabric layer.
  • the invention also encompasses other types of connection, such as ultrasonic welding or thermal welding.
  • the film strip of a laminate strip preferably consists of a monofilm of a thermoplastic elastomer, in particular film strip of a polymer from the group of styrene-butadiene-styrene copolymers (SBS), styrene-isoprene-styrene block copolymers (SIS), styrene-ethene-butene Styrene copolymers (SEBS), elastic polyethylene copolymers, elastic polypropylene copolymers, elastic polyurethane copolymers, elastic polyamide copolymers, or a mixture of these polymers are suitable.
  • SBS styrene-butadiene-styrene copolymers
  • SIS styrene-isoprene-styrene block copolymers
  • SEBS styrene-ethene-butene Styrene copolymers
  • elastic polyethylene copolymers
  • coextruded films can also be used where particularly co-extruded films with several identical layers are suitable. Particularly suitable are film strips with a thickness between 5 and 150 microns, preferably more than 10 microns and less than 130 microns.
  • the laminate strips consisting of an elastic film and laminated nonwoven fabric are a precursor which can be processed by the roll.
  • the nonwoven fabric of the laminate strips is glued to the elastic film, with hot melt adhesives preferably being used. Particularly good elastic properties of the composite web can be achieved if the two layers of the laminate strip are joined by straight or wavy adhesive strips running along the direction of the laminate strip.
  • the nonwoven fabric of the laminate strips is an elastic spunbonded nonwoven, but also carded nonwovens or inelastic spunbonded nonwoven fabrics of polypropylene, polyethylene, polyamide or polyethylene terephthalate can be used.
  • elastic spunbonded nonwoven based on core-sheath multifilaments with elastic core polymers such as elastic polypropylene copolymers or polyurethanes, being used as sheath polymer, for example polypropylene or polyethylene.
  • elastic core polymers such as elastic polypropylene copolymers or polyurethanes
  • sheath polymer for example polypropylene or polyethylene.
  • laminate strips in which the film strips are adhesively bonded to the nonwoven layer it is also possible in the context of the invention to use laminate strips in which the film strips are bonded to the nonwoven layer without adhesive by extrusion lamination.
  • thermoplastic elastomers typically have a high tack
  • the laminates used can be rolled up, stored, transported and processed as a precursor on rolls, since the nonwoven fabric layer on the one hand effectively prevents blocking of the laminate and on the other hand increases the tensile strength of the laminate.
  • the sheet-like nonwoven fabric layer typically has a basis weight between 5 g / m 2 and 50 g / m 2 , preferably between 20 g / m 2 and 40 g / m 2 , wherein a carded nonwoven fabric is preferably used.
  • a carded nonwoven fabric is preferably used.
  • spunbonded nonwovens typically have a weight per unit area of between 10 g / m 2 and 30 g / m 2 .
  • the sheet-like nonwoven fabric layer consists for example of fibers of polyethylene terephthalate, polyamide, polyethylene, preferably polypropylene.
  • the laminate strips are bonded by an adhesive, preferably a hotmelt adhesive, to the sheet-like nonwoven fabric layer at its film side, the adhesive preferably being in the form of straight or wavy adhesive strips running along the direction of the laminate strips. Between the laminate strips, the nonwoven layer is bonded to nonwoven strips.
  • the adhesive having a basis weight between 2 g / m 2 and 20 g / m 2 , preferably between 5 g / m 2 and 10 g / m 2 , prior to bonding the nonwoven layer with the laminate strips and the nonwoven strips applied to the sheet-like nonwoven fabric layer.
  • nonwoven strips of a lightweight spunbonded nonwoven having a basis weight between 10 g / m 2 and 30 g / m 2 , preferably of more than 10 g / m 2 and less than 20 g / m 2 .
  • a spunbonded nonwoven made of polypropylene with a high tear resistance is suitable.
  • carded nonwoven fabrics made of polypropylene, polyethylene, polyamide or polyethylene terephthalate can be used.
  • the edge regions in which the nonwoven strips overlap the nonwoven layer of the laminate strips may have a width of 2 to 7 mm, preferably more than 4 and less than 5 mm.
  • the nonwoven strips are expediently fixed, for example by adhesive or by a connection by ultrasonic welding, to the nonwoven layer of the laminate strips.
  • adhesive in a preferred embodiment of the invention, the nonwoven strips and the nonwoven layer of the laminate strips are in the edge regions glued together from the edge of the nonwoven strip to a maximum width of 5 mm, preferably to a width between 1 and 4 mm, not glued together.
  • the compound in the alternative use of an ultrasonic process, the compound preferably extends to the edge of the nonwoven strip, thereby increasing the tear strength of the joint.
  • the invention also provides a method for producing the described composite web, wherein spaced, parallel laminate strips are glued from a film strip of an elastic film and a laminated nonwoven fabric layer at its film side with a flat nonwoven fabric layer, wherein applied between the laminate strips nonwoven fabric strip on the sheet nonwoven fabric layer and wherein the nonwoven strips overlap the nonwoven layer of the laminate strips in an edge region of the laminate strips.
  • a laminate made of an elastic film, preferably an elastic extruded monofilm of a thermoplastic elastomer, and a nonwoven fabric layer are withdrawn from a roll and cut into laminate strips.
  • the film and the nonwoven of the laminate are expediently connected by adhesive applied in strips, the adhesive strips extending in the longitudinal direction of the laminate strips.
  • An advantageous embodiment of the method according to the invention provides that adhesive, for example a hotmelt adhesive, is applied to the nonwoven layer in strips in regions in which the laminate strips are laminated.
  • the adhesive is also applied over the whole area in the areas between the laminate strips.
  • the invention is not limited to adhesive bonding.
  • the connection can also be generated in an ultrasonic welding unit.
  • the nonwoven strips are preferably also provided with an adhesive, for example a hot melt adhesive, which is applied, for example in the form of two strips, to the side of the nonwoven strips which are laminated to the nonwoven layer and the edge regions of the laminate strips.
  • the laminate strips and the nonwoven strips are applied to the nonwoven layer in such a way that they overlap in an edge region with a width of between 2 and 7 mm, preferably more than 4 mm and less than 5 mm. If the adhesive is applied to the nonwoven strips at a distance of not more than 5 mm, preferably between 1 and 4 mm, from the edge of the nonwoven strips, it is possible to prevent adhesive from emerging on the surface of the composite web during the laminating process.
  • connection when the nonwoven strips are bonded to the nonwoven layer by an ultrasonic welding station, the connection preferably extends to the edge of the nonwoven strips. If the nonwoven strips are bonded to the laminate strips and the nonwoven sheet without the use of adhesive by an ultrasonic welding station, the subsequent rolls will not be soiled or torn off during the manufacturing process.
  • the composite web may be over-stretched after lamination, transverse to the orientation of the laminate strips, preferably in a stretch roll arrangement.
  • the components of the composite web 1 are in Fig. 1 shown.
  • an adhesive 3 is applied, which is applied in the areas in which laminate strips 4 are laminated, in the form of straight or wavy adhesive strips extending along the direction of the laminate strips 4. Between the areas in which the laminate strips 4 are laminated, the adhesive 3 is applied over the entire surface of the nonwoven fabric layer 2.
  • Each of the laminate strips 4 is composed of a film strip 5 made of a monofilm of a thermoplastic elastomer and a nonwoven fabric layer 6 of a core-sheath multifilament-based elastic spunbonded nonwoven fabric.
  • the layers of the laminate strip 4 are connected by adhesive strips running along the longitudinal direction of the laminate strips 4.
  • the film strips 5 of a monofilm of a thermoplastic elastomer consist of a polymer of the group of styrene-butadiene-styrene copolymers (SBS), styrene-isoprene-styrene block copolymers (SIS), styrene-ethene-butyric-styrene copolymers (SEBS) , elastic polyethylene copolymers, elastic polypropylene copolymers, elastic polyurethane copolymers, elastic polyamide copolymers, or a mixture of these polymers.
  • SBS styrene-butadiene-styrene copolymers
  • SIS styrene-isoprene-styrene block copolymers
  • SEBS styrene-ethene-butyric-styrene copolymers
  • elastic polyethylene copolymers elastic polypropylene copoly
  • an adhesive 3 preferably a hot melt adhesive, applied in the form of two strips, these strips from the edge of the nonwoven strips 7 each have a maximum spacing of 5 mm, preferably from 1 to 4 mm ,
  • a composite web 1 is shown consisting of the in Fig. 1 manufactured components is made.
  • the edge areas in which the nonwoven strips 7, the nonwoven fabric layer 6 of the laminate strips 4 overlap, have a width of, for example, 2 to 7 mm.
  • the nonwoven strips 7 are not glued to the underlying nonwoven layer 6 of the laminate strips 4 in the edge regions to a maximum width of 5 mm.
  • the composite web 1 is elastic transversely to the longitudinal direction of the laminate strips 4. Between the laminate strips 4, where the nonwoven strips 7 are glued over the entire area with the flat nonwoven layer 2, the composite web 1 is inelastic.
  • the inventive method for producing a composite web 1 is in Fig. 3 shown schematically.
  • the nonwoven layer 2 is unrolled from a nonwoven roll 8 and provided with adhesive 3, wherein the adhesive 3 in the areas in which the laminate strips 4 are laminated strip-shaped and applied in the areas between the laminate strips 4 over the entire surface of adhesive nozzles 9.
  • a laminate 10 of an elastic extruded monofilm of a thermoplastic elastomer and a nonwoven fabric layer 6 is peeled from a laminate roll 11 and cut into laminate strips 4.
  • the laminate strips 4 are spaced from a deflecting device 12 and fed parallel to each other of the non-woven fabric layer 2 provided with hot melt adhesive and connected in a laminating unit 13 with this.
  • Nonwoven fabric 14 is pulled from a nonwoven roll 8 'and cut into nonwoven strips 7, which are each provided with the aid of adhesive nozzles 9 with two strips of hot melt adhesive, the adhesive 3 is applied with a maximum distance of 5 mm to the edge of the nonwoven strips 7.
  • the nonwoven strips 7 are fed to the material web 15 and applied to the nonwoven layer 2 in such a way that they overlap the nonwoven layer 6 of the laminate strips 4 in the edge regions of the laminate strips with a width of between 2 and 7 mm.
  • the composite web 1 After passing through another laminating unit 13 ', the composite web 1 is fed to a stretching roller assembly 16 in which it is overstretched transversely to its running direction. The composite web 1 is subsequently cut in their longitudinal direction in composite strips 17 and rolled up. Sections of these composite strips 17 may be used, for example, for the elastic termination or closure parts of sanitary products, such as disposable diapers.
  • the Fig. 4 shows the components of the composite web 1, wherein the nonwoven strips 7 are connected in an alternative embodiment of the invention by ultrasonic welding with the nonwoven fabric layer 6 of the laminate strips 4 and with the flat nonwoven fabric layer 2. Only in the area of the laminate strips 4 is adhesive 3 applied to the flat nonwoven layer 2. Because there is no adhesive 3 in the region between the laminate strips 4, the risk of contamination of the various machine parts is largely ruled out.
  • the nonwoven strips 7 are fed to the material web 15 and bonded in an ultrasonic welding station to the nonwoven fabric layer 6 of the laminate strips 4 and the flat nonwoven layer 2.

Claims (24)

  1. Bande de matériau composite (1) comportant des zones élastiques et non élastiques et qui présente sur ses deux surfaces du non-tissé et par endroits des bandes de film intermédiaires (5) en film élastique, une surface se présentant sous forme d'une couche de non-tissé de surface (2) et la couche de non-tissé (2) étant raccordée entre les bandes de film (5) à du non-tissé qui est disposé sur la surface opposée de la bande de matériau composite (1), caractérisée en ce que chaque bande de film (5) est reliée respectivement à une couche de non-tissé (6) pour former une bande de laminé (4), que les bandes de laminé (4) sont collées par leur face en film à la couche de non-tissé de surface (2) et que le non-tissé qui est raccordé entre les bandes de film (5) à la couche de non-tissé de surface (2) se présente sous forme de bandes de non-tissé (7) qui s'étendent parallèlement aux bandes de laminé (4) et chevauchent la couche de non-tissé (6) des bandes de laminé (4) dans les zones périphériques des bandes de laminé (4).
  2. Bande de matériau composite (1) selon la revendication 1, caractérisée en ce que les bandes de non-tissé (7) sont raccordées ou collées par toute leur surface à la couche de non-tissé de surface (2) par soudage aux ultrasons entre les bandes de laminé (4).
  3. Bande de matériau composite (1) selon la revendication 1 ou 2, caractérisée en ce que les bandes de film (5) consistent en un monofilm d'élastomère thermoplastique.
  4. Bande de matériau composite (1) selon la revendication 3, caractérisée en ce que les bandes de film (5) consistent en un polymère du groupe des copolymères de styrène-butadiène-styrène (SBS), copolymères blocs de styrène-isoprène-styrène (SIS), copolymères de styrène-éthènebutène-styrène (SEBS), copolymères de polyéthylène élastiques, copolymères de polypropylène élastiques, copolymères de polyuréthane élastiques, copolymères de polyamide élastiques ou un mélange de ces polymères.
  5. Bande de matériau composite (1) selon une des revendications 1 à 4, caractérisée en ce que les bandes de film (5) ont une épaisseur comprise entre 5 et 150 µm, de préférence de plus de 10 µm et de moins 70 µm.
  6. Bande de matériau composite (1) selon une des revendications 1 à 5, caractérisée en ce que la couche de non-tissé de surface (2) présente un grammage compris entre 5 g/m2 et 50 g/m2, de préférence entre 20 g/m2 et 40 g/m2.
  7. Bande de matériau composite (1) selon une des revendications 1 à 6, caractérisée en ce que les bandes de laminé (4) sont collées à la couche de non-tissé de surface (2) par des bandes encollées rectilignes ou de forme ondulée qui s'étendent dans le sens des bandes de laminé (4).
  8. Bande de matériau composite (1) selon une des revendications 1 à 7, caractérisée en ce que les bandes de film (5) et la couche de non-tissé (6) des bandes de laminé (4) sont raccordées de préférence en forme de bande et pas sur toute leur surface.
  9. Bande de matériau composite (1) selon une des revendications 1 à 8, caractérisée en ce que la couche de non-tissé (6) des bandes de laminé (4) est un non-tissé élastique à base de multifilaments à noyau-enveloppe.
  10. Bande de matériau composite (1) selon une des revendications 1 à 9, caractérisée en ce que les zones périphériques dans lesquelles les bandes de non-tissé (7) chevauchent la couche de non-tissé (6) des bandes de laminé (4) ont une largeur de 2 à 7 mm, de préférence de plus de 4 et moins de 5 mm.
  11. Bande de matériau composite (1) selon une des revendications 1 à 10, caractérisée en ce que les bandes de non-tissé (7) sont collées à la couche de non-tissé (6) dans les zones périphériques des bandes de laminé (4).
  12. Bande de matériau composite (1) selon la revendication 11, caractérisée en ce que les bandes de non-tissé (7), dans les zones périphériques où les bandes de non-tissé (7) chevauchent la couche de non-tissé (6) des bandes de laminé (4), en partant du bord de la bande de non-tissé (7), sur une largeur de 5 mm au maximum, de préférence 1 à 4 mm, ne sont pas collées à la couche de non-tissé sous-jacente (6) de la bande de laminé (4).
  13. Bande de matériau composite (1) selon une des revendications 1 à 10, caractérisée en ce que les bandes de non-tissé (7), dans les zones périphériques des bandes de laminé (4), sont reliées par soudage aux ultrasons à la couche de non-tissé (6).
  14. Bande de matériau composite (1) selon une des revendications 1 à 10, caractérisée en ce que les bandes de non-tissé (7) consistent en un non-tissé ayant un grammage compris entre 10 et 30 g/m2, de préférence de plus de 10 g/m2 et de moins de 20 g/m2.
  15. Procédé de fabrication d'une bande de matériau composite (1) selon une des revendications 1 à 14,
    dans lequel des bandes de laminé (4) espacées et orientées parallèlement faites respectivement d'une bande de film (5) en film élastique et d'une couche plaquée de non-tissé (6) sont collées par leur face en film à une couche de non-tissé de surface (2),
    dans lequel des bandes de non-tissé (7) sont appliquées entre les bandes de laminé (4) sur la couche de non-tissé de surface (2) et
    dans lequel les bandes de non-tissé (7) chevauchent la couche de non-tissé (6) des bandes de laminé (4) dans les zones périphériques des bandes de laminé (4).
  16. Procédé selon la revendication 15, caractérisé en ce qu'un laminé (10) en monofilm extrudé élastique en élastomère thermoplastique et en couche de non-tissé (6) est tiré d'un rouleau (11) et découpé en bandes de laminé (4).
  17. Procédé selon la revendication 15 ou 16, caractérisé en ce que la bande de film (5) et la couche de non-tissé (6) de chaque bande de laminé (4) sont reliées par des bandes encollées qui s'étendent dans le sens longitudinal de la bande de laminé (4).
  18. Procédé selon une des revendications 15 à 17, caractérisé en ce que de la colle (3) est appliquée dans la zone où les bandes de laminé (4) sont plaquées sous forme de bandes encollées qui s'étendent parallèlement aux bandes de laminé (4) et sur toute la surface de la couche de non-tissé de surface (2) entre les bandes de laminé (4).
  19. Procédé selon une des revendications 15 à 18, caractérisé en ce que de la colle (3) est appliquée sur toute la surface de la couche de non-tissé de surface (2) dans la zone située entre les bandes de laminé (4).
  20. Procédé selon une des revendications 15 à 19, caractérisé en ce que les bandes de non-tissé (7) sont appliquées sur la couche de non-tissé (2) de manière à chevaucher la couche de non-tissé (6) des bandes de laminé (4) dans les zones périphériques des bandes de laminé (4) avec une largeur comprise entre 2 et 7 mm, de préférence de plus de 4 et de moins de 5 mm.
  21. Procédé selon une des revendications 15 à 20, caractérisé en ce que la colle (3) est appliquée sous forme de respectivement deux bandes encollées sur les bandes de non-tissé (7).
  22. Procédé selon une des revendications 15 à 21, caractérisé en ce que la colle (3) est appliquée sur les bandes de non-tissé (7) à une distance de 5 mm au maximum, de préférence 1 à 4 mm, du bord des bandes de non-tissé (7).
  23. Procédé selon une des revendications 15 à 20, caractérisé en ce que les bandes de non-tissé (7) sont raccordées à la couche de non-tissé (6) par soudage aux ultrasons au moins dans les zones périphériques des bandes de laminé (4).
  24. Procédé selon une des revendications 15 à 23, caractérisé en ce que la bande de matériau composite (1) est sur-étirée transversalement à l'orientation des bandes de laminé (4), de préférence dans un dispositif de laminoir à étirer (16).
EP20050013588 2005-06-23 2005-06-23 Bande de tissu composite avec régions élastiques et non-élastiques Not-in-force EP1736306B1 (fr)

Priority Applications (8)

Application Number Priority Date Filing Date Title
EP20050013588 EP1736306B1 (fr) 2005-06-23 2005-06-23 Bande de tissu composite avec régions élastiques et non-élastiques
AT05013588T ATE462557T1 (de) 2005-06-23 2005-06-23 Verbundstoffbahn mit elastischen und unelastischen bereichen
ES05013588T ES2340932T3 (es) 2005-06-23 2005-06-23 Cinta de tela compuesta con zonas elasticas y zonas inelasticas.
PL05013588T PL1736306T3 (pl) 2005-06-23 2005-06-23 Wstęga kompozytowa z obszarami elastycznymi i nieelastycznymi
DE200550009317 DE502005009317D1 (de) 2005-06-23 2005-06-23 Verbundstoffbahn mit elastischen und unelastischen Bereichen
US11/250,793 US7422991B2 (en) 2005-06-23 2005-10-14 Laminate material web having elastic and non-elastic regions
JP2005310064A JP4391466B2 (ja) 2005-06-23 2005-10-25 弾性的および非弾性的な領域を有する複合材料帯状体
US12/012,195 US7704901B2 (en) 2005-06-23 2008-01-31 Method for producing a laminate material web having elastic and non-elastic regions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20050013588 EP1736306B1 (fr) 2005-06-23 2005-06-23 Bande de tissu composite avec régions élastiques et non-élastiques

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EP1736306A1 EP1736306A1 (fr) 2006-12-27
EP1736306B1 true EP1736306B1 (fr) 2010-03-31

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EP (1) EP1736306B1 (fr)
JP (1) JP4391466B2 (fr)
AT (1) ATE462557T1 (fr)
DE (1) DE502005009317D1 (fr)
ES (1) ES2340932T3 (fr)
PL (1) PL1736306T3 (fr)

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DE502005009317D1 (de) 2010-05-12
US20080128077A1 (en) 2008-06-05
PL1736306T3 (pl) 2010-08-31
ES2340932T3 (es) 2010-06-11
JP4391466B2 (ja) 2009-12-24
EP1736306A1 (fr) 2006-12-27
US20060292328A1 (en) 2006-12-28
US7704901B2 (en) 2010-04-27
US7422991B2 (en) 2008-09-09
JP2007001285A (ja) 2007-01-11
ATE462557T1 (de) 2010-04-15

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